JPH06209804A - Footwear - Google Patents

Abstract

PURPOSE:To eliminate the uncomfortable feel intrinsic to the foot wear while maintaining the waterproof property of the footwear by interposing a hygroscopic moistureproof fabric between the surface skin material and lining material of the footwear and incorporating an antimicrobial material into the hygroscopic moisture proof fabric and/or the lining material. CONSTITUTION:This footwear is formed by interposing the hygroscopic moistureproof fabric between the surface skin material and lining material of the footwear. The lining includes woven and knitted fabrics, non-woven fabrics, etc. The hygroscopic moistureproof fabric includes laminate fabrics having a polymer layer on a fiber base fabric, high-density cloth, fiber structure constituted of an extremely fine and long fiber web or sheet, film, etc. The method of incorporating the antimicrobial material into the hygroscopic moistureproof fabric and/or the lining material includes a method of kneading the antimicrobial material into the fibers or films constituting the hygroscopic moistureproof fabric or the lining material and a method of sticking the antimicrobial material thereto by post processing. The footwear which eliminates the uncomfortability, such as moistening and smell, intrinsic to the footwear while having the waterproof property is provided. The antimicrobial material is incorporated in the hygroscopic moisture proof fabric and/or the lining material.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION The present invention relates to footwear. More specifically, the present invention relates to footwear that eliminates unpleasant sensations such as stuffiness and odor.

[0002]

2. Description of the Related Art Footwear, especially for sports such as jogging and golf, has a peculiar discomfort such as stuffiness and odor due to sweating from the feet accompanying the exercise. Conventionally, an adsorbent such as activated carbon has been used. The contained insoles, etc. have been developed,
I am not completely satisfied. In particular, a shoe using a waterproof skin material generally has significantly lower breathability and moisture permeability than a non-waterproof shoe, so that the discomfort increases.

[0003]

SUMMARY OF THE INVENTION It is an object of the present invention to provide footwear that fundamentally solves this problem.

[0004]

The present invention relates to footwear in which a breathable waterproof cloth is interposed between a skin material and a lining material of the footwear, and the breathable waterproof cloth and / or the lining material has an antibacterial substance. Footwear characterized by being included.
As the skin material and the lining material that constitute the footwear of the present invention,
Any generally used one may be used, and examples of the skin material include natural leather, artificial leather, synthetic leather, knitted woven fabric, and non-woven fabric, but a skin material having excellent water repellency, particularly breathability, and moisture permeability is preferable. .

As the lining material, there are knitted woven fabrics, non-woven fabrics, etc., but preferably a material excellent in moisture absorption (water) or moisture absorption (water)
A material having a two-layer structure having water permeability on one side and water retention on the other side, as described in Japanese Utility Model Publication No. 59-13849, is particularly preferable as a lining material. Publication No. 39-27935, Japanese Utility Model Publication No. 55-
It is preferable to use a moisture-absorbing and quick-drying cloth as described in JP-A-135068 and JP-A-52-25168, because the elimination of discomfort is promoted.

The moisture-permeable waterproof cloth used in the present invention has a moisture permeability of 1000 g / m ² · 24 Hr or more, preferably 2500 g / m ² · 24 Hr or more, more preferably 5
^{000g / m 2 · 24Hr~10000g / m} 2 · 24H
r, and water pressure resistance is 500 mm or more, preferably 1000 mm
As described above, it is more preferable that the diameter is 2000 mm to 20000 mm. If the moisture permeability is less than this value, the effect of eliminating discomfort over time becomes poor, and if the water pressure resistance is less than this value, the waterproof property is not satisfied.

Examples of the form of such a breathable waterproof cloth include a laminated cloth having a polymer layer on at least one side of a fiber base cloth, a high density cloth, a fiber structure composed of an ultrafine long fiber web or sheet, a film and the like. Yes, and a combination of these.

As the polymer layer of the laminated cloth, there are a porous polymer layer and a non-porous polymer layer, and polyurethane type, polyacrylic type, polyamide type, polyvinyl chloride type, polyfluorine type polymer, etc. are used. However, a polyurethane polymer having a moisture permeability of 2500 g / m ² · 24 Hr or more is preferable. The thickness of the polymer layer is 30 μm or less, preferably 10 μm or less. In addition, knitted woven fabrics and non-woven fabrics made of all fiber materials can be used as the fiber base fabric of the laminated cloth. , Which is appropriately selected depending on the environment, etc., but particularly as described in Japanese Utility Model Publication No. 59-13849, a fibrous base fabric made of a two-layered fabric having water permeability on one side and water retention on the other side, Japanese Patent Publication No. Sho. Three
When a moisture-absorbing quick-drying cloth as described in 9-27935, Japanese Utility Model Laid-Open No. 55-135068 and Japanese Patent Laid-Open No. 52-25168 is used, discomfort is eliminated and comfort is further improved. Therefore, it is preferable. As a method for forming the polymer layer on the fiber base cloth, there is a method by coating or laminating. As the adhesive used in the laminating method, a polyurethane-based polymer is preferable, but a polyacrylic-based, polyester-based, polyamide-based, polychlorinated Vinyl-based and polyvinyl acetate-based polymers can also be used.

The high-density fabric is a high-shrinkage ultrafine yarn or a different-shrinkage mixed-fiber yarn, or a high-density fabric obtained by knitting or processing,
A combination of these is used to increase the density, and a yarn usage of 10 to 150 d and a basis weight of 10 to 200 g / m ² are preferable.

A fiber structure composed of an ultrafine long fiber web or sheet is preferably an ultrafine synthetic fiber long fiber web or sheet (preferably having a basis weight of 20 to 10) obtained by a melt blow method and having a single fiber diameter of 0.1 to 5 μm. 80 g / m ² ,
A knitted woven fabric, a non-woven fabric, and a perforated film are joined and integrated on one or both sides (thickness 0.1 to 1 mm) with, for example, a low melting point synthetic resin adhesive.

The film is a polyester-based, polyamide-based, or polyolefin-based film having a thickness of 30 to 1000 μm.

The antibacterial substance used in the present invention includes:
In particular, substances that have been confirmed to be safe to the human body and the environment are preferable, and preferably antibacterial substances that are used or known in clothing applications that have been confirmed to have a high degree of safety against skin disorders and the like. For example, there are organic silicon quaternary ammonium salts, phenolamide-based substances, compounds and compounds containing metal ions such as copper and silver, such as zeolites, piceanide-based and pyridone-based substances, but particularly preferably chitin and / or Derivatives such as chitin, chitin having a deacetylation degree of 50% or more (chitosan), and carboxy-modified chitin are preferable.

Chitin and / or its derivatives are excellent in biocompatibility and are expected to be used as sutures and artificial skin during surgery. Also, Escherichia coli, Trichophyton, Staphylococcus aureus It also has excellent antibacterial properties against the like. Further, since it is excellent in biocompatibility, it does not cause skin damage, and further, due to excellent properties such as water absorption of chitin and / or its derivative, water absorption of footwear,
Since the moisture releasing property is remarkably improved, comfort as footwear is remarkably improved.

In the present invention, various methods can be adopted as a method of incorporating the antibacterial substance into the moisture-permeable waterproof cloth and / or the lining material, preferably the moisture-permeable waterproof cloth or the moisture-permeable waterproof cloth and the lining material. , For example, there is a method of kneading an antibacterial substance into a fiber or a film constituting a breathable waterproof cloth or a lining material or a method of attaching the antibacterial substance by post-processing, but preferably a polymer layer of a laminated cloth forming a breathable waterproof cloth. It is good to contain an antibacterial substance. In particular, a cloth of the type comprising a synthetic resin layer containing chitin and / or a derivative thereof and a base cloth, which is disclosed in Japanese Patent Application Laid-Open No. 3-76871 related to the present applicant, is suitable.

In the present invention, the content ratio of the antibacterial substance to the breathable waterproof cloth or the lining material may be appropriately selected according to the antibacterial level of the antibacterial substance to be used, but it is usually 0.
1% to 15% by weight, preferably 0.2 to 10% by weight
It may be selected within the range. Incidentally, in order to interpose the moisture-permeable waterproof cloth between the skin material and the lining material, it is general to join it with an adhesive or sewing means. Further, it is preferable to use the footwear of the present invention together with an insole containing an antibacterial substance, particularly chitin and / or a derivative thereof, because the comfort is further improved.

[0016]

EXAMPLES The present invention will be specifically described below with reference to examples, but the present invention is not limited to these examples. The method of measuring the characteristics shown in the examples is as follows. Water resistance JISL-1092 Water resistance test Moisture permeability JISL-1099 A-1 method

Example 1 Nylon 66 plain woven fabric (70d, warp density 120 / inch, weft density 70 / inch) was added with a fluorine-based water repellent (Sumitomo 3M FC232 at a ratio of 2 parts to 100 parts of water). (Concentration) and an isocyanate compound as an adhesive (Takenate B830W manufactured by Takeda Pharmaceutical Co., Ltd., 10% with respect to the fluorine-based water repellent) were dipped in a mixed solution, and then heat calendering was followed by heat calendering.

A 10% dilute acid solution with a mixing ratio of acetic acid and lactic acid of 1: 1 was prepared, and 0.5% of chitin (Chitosan A manufactured by Katakura Chikkarin Co., Ltd.) having a deacetylation degree of 80% was added thereto,
55 parts of a chitin dilute acid solution which had been swelled for 24 hours and then dissolved by stirring with a disper, a W / O type polyurethane resin emulsion (Heimren X-3038 manufactured by Dainichi Seika Kogyo Co., Ltd.)
Was mixed with 100 parts of MEK, 20 parts of MEK, 20 parts of toluene, and 1.5 parts of the isocyanate compound on the plain woven fabric with a bar coater and dried to form a moisture-permeable porous resin film of 15 μm. Then, the mixture was heated at 120 ° C. for 2 minutes and finish-set to obtain a moisture-permeable waterproof cloth.

A nylon 66 plain woven fabric was used as the skin material, and a nylon 66 spunbonded nonwoven fabric was used as the lining material. A moisture-permeable waterproof cloth was inserted between them, laminated, and joined by sewing to produce a jogging shoe. As a comparative example, a moisture-permeable waterproof cloth not containing 55 parts of the above chitin diluted acid solution in the resin film was produced in the example, and a jogging shoe was produced in the same manner as in the example.

As a result of the wearing test by 10 people's monitors,
In the examples, the waterproofness was excellent, and almost no discomfort such as stuffiness or smell was felt, whereas in the comparative example, all of them felt discomfort such as stuffiness or smell although they were waterproof. It was The moisture-permeable waterproof cloths of Examples and Comparative Examples had a moisture permeability of 8000 g / m ² · 24 Hr and a water pressure resistance of 3000.

[0021]

Industrial Applicability The present invention provides footwear which is waterproof and eliminates the discomfort peculiar to footwear such as stuffiness and smell.

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Claims (1)

[Claims] 1. A footwear comprising a breathable waterproof cloth interposed between a skin material and a lining material of the footwear, wherein the breathable waterproof cloth and / or the lining material contains an antibacterial substance. Characteristic footwear.